Composite flooring



' June 3 O D. w. PYE 1,913,613

COMPOSITE FLOORING Filegi Sept. 23, 1930 Patented June 13,1933

STATES PATENT or where there is a material warping or other distortionof the metal base, and the object of the invention is to prevent suchdistortion from loosening or cracking the concrete surfacing. Iaccomplish the desired result by interposing an elastic layer betweenthe metal base and the concrete surfacing, having such characteristicsthat it performs the double function of preventing transmission of thesmall movements to the warping, expansion, contraction etc. from thebase to the concrete, and also acts as a bond to tie the concrete to themetal base.

More particularly, in laying my floor, I apply to the top surface of themetal base a coating of a slow-drying, ductile, VISCOllS material, and Ilay over this a layer of fibrous material, either a woven fabric orseparate element, which will elfectively adhere to the viscous material.Then, before the viscous coating has set, I apply the concrete layer.

The metal base may be of any suitable form, but I prefer to use a baseof the type called truss-plates. These comprise double sheets of metalspaced one above the other and having opposed inwardly deflectedportions at various points suitably connected together to make aunitary, hollow structure.

For the viscous, ductile coating, I prefer to use an asphalticpreservative, or an asphaltic paint having little or no drier and anaddition of linseed oil, such materials having the characteristic ofremaining elastic for an indefinite time.

As the fibrous material, I may use burlap of a Very large mesh or I mayapply separated coco-fibres or other filamentous material, Which may bereadily embedded in the viscous coating and aid in forming an elasticlayer.

To produce what is known as flexible concrete for the final layer, I mayemploy magnesium oxychloride cement and a wood filler,

as saw dust or wood pulp, which may form over half of the concrete.

My invention is illustrated in the draw- F-ICE comrosrrn FLOORING-Applidationfiled September 23, 1930. Serial No. 483,773.

armor BROOKLYN, NEW YORK, vAs'srsnoR 'ro ruco rnonucrrs CORPORA- Tron,ornEwjYoaK, ii-Y, A qonronarron or NEW YORK I ing, wherein Fig.1 alplanof a metal base I carrying an elastic coat surmountedby a. layer ofcoarse burlap before the concrete-is applied; Fig. 2 is avertical-section-wof -the same; Figs. 3 and 4:,arefragmentarywerticalsections after the concrete has been "applied and the floor thusfinished, the position of these figures being illustrated .bYrtllQ;correspondingly numbered lines on -Figwl. s. we;

As shown in the drawing, IO-and 1'1, indi cate the bottom and topplatesofa metal base made .of-truss platesli- .In various regions I thebottom plate 10 is; bowed upwardly at 12, the top platejcorrespondingly'bowed downwardly at l3 and where these' indentations touch, they aresecured'together, as by electric welding or-arivet 15., v To assist inlocking the concrete in place, it has been customary. to. formprojecting lips 'onthe top plate 11 which overhangthe ends ofthedepression 13. Y These lipsare shown at 16 and are cut out from theportion 13by making openings17, the lips being then turned up into thegeneral planeat thetop, as illustrated for instance in Patent No.l,3Q2,822 to J. 0. Madison. 3

In Figs. 2, 3 and 4, theheavy black line'QO indicates a layer ofasphaltic preservative or other ductilecoating which isapplied to theentire top surface. 21' indicates the coarse burlap lying on thispreservative and bound by it to the top of the metal plate. This sheetof burlap is preferablylaid over. the entire metal surface withoutreference to the depressions 13 across whichthe fabric extends in nearlya plane.

30 in Figs. 3 and 4 indicates the layer of flexible concrete. I This isapplied directly on top of the burlap and asphalti'c preservative, anddepresses the burlap more or less into the depressions of the 'metalplateas illustrated in Figs. 3 and a and passes through the meshes ofthe burlap, thus adhering both to the burlap and the ductile coating. Atthe depressions 13 theburlap becomes embedded in the lower portion ofthe concrete layer.

The concrete extends under the lips 16 so that it becomes effectivelylocked to the plate at the depressions, while some of the concretepasses also through the openings 17 and seform a bond for holding theconcreteto the 'flat regions between 'the'depressi'ons, which constitutethe major portion of the top'sur face of the metal base.

I have found that good results'can tained by using coco-fibre inplace-of the bur-'- lap layer, the same being scattered comparativelyevenly-over the' entire top of the metal platem lmay use various otherfilamentous -materialsscatteredover the metal plate insteadofthecodo-fibre In any case however, it is desirable to h'aVe thefibrous material in a; substantially uniform'layer.

' "EIJAMFCQIHPOSHQ flooring comprising a metal-basdafcoating of ductilematerial-on the dip surface of th'e-base,="a 'layer'of coarse buvlapohthductile cOating,--and a layer of conoietU'onthe burlap andducti'lecoating.-

metal baseg alay'enof ductile material on the tdp snrface'offthe ba'sefalayer of coarse burlapon the ductile material, and a layer of flexibleconcrete on the 'd'uctile material and 'buPlaIiU 3. 111" a: 'fio orflthecombination of Y a ;'base E "having flatter) portions acoatingon top ofsaid-fiat== oruunmf material similar to asj'pha lt inequities withlittle drier, a substantia lly uniformjlayer of fibrous'material over"the asphaltic' layer described, and a layer of flex'ilile concrete onthe asphaltic and fibrous layer. ,r 4. Ina'c'ompo'site flooring of thecharacter describedfthe' combination of a. metal base comprisingibottomand top plates spaced apart and connected together byjmcans ofupward'inde'ntations on the bottom plate and downward indentations onthe top plate and means joining such indentations, a layer of ductilematerial on the top surface of the metal base, and a 'layerof flexibleconcrete restingon the ductile material and bound by it to themetalbase. i

5'. In a composite flooring of the character described, the combinationof a metal base comprising [bottom and top plates spaced apartand-connected together by means of upward indentations-on the bottomplate and downward indentations on the top plate, and means joining suchindentations, a layer of ductile material on the top surface of themetal base, a substantially uniform layer of fibrous material over theductile layer, and a 6. A composite flooring comprising a metal base, acoating thereon comprising an asphaltic paint with little drier and withthe addition of linseed oil, a substantially uniform layer of fibrousmaterial in the coating and a layer of concrete" or similar substance onthe asphaltic coating and-fibrous layer.

7. In a floor, the combination of a base havmg flat top portions, acoating of slow-drying ductile viscous. material 'jofnj'top of said flatportions, 'a substantially uniform layer of fibrous material over thecoating, and a layer of concrete united to the fibrous material.

1 :In testnnony. whereof, I hereunto afiix my signature. l a DAVID layerof flexible concrete resting on the ductile and fibrous material andbound-by it to 65 the metal base.

